If the equation of a circle is (x + 5)2 + (y - 7)2 = 36, its center point is
(5, 7)
(-5, 7)
(5, -7)
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OpenStudy (here_to_help15):
B
OpenStudy (here_to_help15):
I think you are saying
(x + 5)^2 + (y -7)^2 = 36
the standard or canonical form of a circle is:
X^2 + Y^2 = R^2
where R is the radius of the circle. It's just the pythagorean theorem for all possible values
of X and Y. (Note, that possible values of x and y are only those which satisfy the equation.)
So for your problem, let X= x +5 and Y = y -7
then R^2 = 36, so the radius R=6
the 5 and 7 just shift the center of the circle to x= -5 and y =+7.
OpenStudy (countrygirl1431):
i have no clue really what im saying lol
OpenStudy (here_to_help15):
im? lol or you*
OpenStudy (here_to_help15):
your*
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OpenStudy (here_to_help15):
Well i got to go in 5 min
OpenStudy (countrygirl1431):
??????
OpenStudy (here_to_help15):
forget it lol just know the answer is B ;)
OpenStudy (countrygirl1431):
then ill be back to my lonesome self:(
OpenStudy (here_to_help15):
Aww il be back tomorrow :)
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